Update docker-compose config for HyperV compatibility (owner issues are avoided by using named volumes).

docker-compose.yml

@@ -3,7 +3,7 @@ services:
   db:
     image: postgres
     volumes:
-      - ./tmp/db:/var/lib/postgresql/data
+      - psql:/var/lib/postgresql/data
     environment:
       POSTGRES_PASSWORD: password
   web:
@@ -11,7 +11,11 @@ services:
     command: bash -c "rm -f tmp/pids/server.pid && bundle exec rails s -p 3000 -b '0.0.0.0'"
     volumes:
       - .:/myapp
+      - webtmp:/myapp/tmp
     ports:
       - "3000:3000"
     depends_on:
-      - db
+      - db
+volumes:
+  psql:
+  webtmp: